Strydom, C.Osman, Yusuf I.Lodhi, Tariq AbbasDept. of Restorative DentistryFaculty of Dentistry2013-09-112024-04-152007/09/192007/09/192013-09-112024-04-152006https://hdl.handle.net/10566/10922Magister Scientiae Dentium - MSc(Dent)Light-emitting diode (LED) curing lights were introduced to the dental market promising a higher curing efficiency than halogen-based lights. The earlier generation curing lights, however, proved not to be as effective as halogen lights. As a result 3M ESPE introduced a new high-powered LED curing light, the Elipar FreeLight 2, that delivers a greater irradiance. and threfore greater energy density than its precursor. Due to these changes, the light's manufacturer claims that the FreeLight 2 can cure resin composites at half of their recommended curing time. The aim of this study was to compare the effectiveness of cure when a FreeLight 2 was used to sure composite samples at 100% and at 50% of the recommended curing time.enDental materialsThesisUniversity of the Western Cape